Phil Yang created HBASE-18121:
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Summary: Scanner id should be reset when ScannerCallable reload
the location
Key: HBASE-18121
URL: https://issues.apache.org/jira/browse/HBASE-18121
Project: HBase
Issue Type: Bug
Reporter: Phil Yang
Assignee: Phil Yang
If a scan rpc request failed, the RetryingCallable will retry by reload=true
and may change the location because there may be a region movement. However,
the ScannerCallable will still use the previous scanner id and send to the new
server. In new RS the scanner id is not related with the old RS. The most
possible result is UnknowScannerException and client will retry and there will
be one useless rpc. And there is a low probability that there is a scanner with
same id in the new RS, the result will be totally wrong.
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